refactor(web): unify settings panel layouts with shared toolbar/body

- Add PanelToolbar/PanelBody primitives so all four settings tabs share
  the same top-toolbar + scrollable-body rhythm under the unified header.
- API panel: drop the heavy gray shadowed TabsList; move the create
  action into the toolbar next to the tabs, lighten per-tab hints.
- Storage panel: reuse PanelToolbar for the generated-at/refresh bar.
- Account panel: wrap content in PanelBody for consistent padding.
- Models panel: keep the pinned LangBot Models (Space) card at the very
  top, above the add-custom-provider row (intentional pin), using
  PanelBody instead of a top toolbar.

web/src/app/infra/entities/common.ts

@@ -21,7 +21,7 @@ export interface ComponentManifest {
     version?: string;
     author?: string;
   };
-  spec: Record<string, any>; // eslint-disable-line @typescript-eslint/no-explicit-any
+  spec: Record<string, any>;
 }
 
 export interface CustomApiError {

web/src/app/infra/entities/form/dynamic.ts

@@ -8,7 +8,7 @@ export const SYSTEM_FIELD_PREFIX = '__system.';
 export interface IShowIfCondition {
   field: string;
   operator: 'eq' | 'neq' | 'in';
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+
   value: any;
 }
 

web/src/app/infra/entities/plugin/index.ts

@@ -10,7 +10,7 @@ export interface Plugin {
   debug: boolean;
   enabled: boolean;
   install_source: string;
-  install_info: Record<string, any>; // eslint-disable-line @typescript-eslint/no-explicit-any
+  install_info: Record<string, any>;
   components: PluginComponent[];
 }